Determination of Angular Refraction with the Multi Wavelength Method.
Abstract
The report contains the present results of refraction experiments with Interferodispersometer instruments, using the Dual Wavelength method. It is shown, that refraction can be determined in the field up to at least 20 km. Results of measurements with IDM 1 have been compared to simultaneous vertical angle measurements. The changes of these versus time agree to within 1 inch with the IDM-results. For IDM 2 no results are yet available from the field observations. The absolute comparison gives the same order of magnitude for IDM 1. (I,II + IV(prel.) The possibility of making absolute comparison rests on the fact, that the refraction-angle at the observer's site can be computed from ellipsoidal, geoidal and levelling data, using vertical angle measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1975
- Accession Number
- ADA015074
Entities
People
- Erik Tengstrom
- Stig Martensson
Organizations
- Uppsala University